BestDealUSA Barn Door With Honeycomb Grid Gel Set for Studio Flash The Universal Barn door Kit comes with a grid and 4 color gels with metal frames. Barndoor devices alter the shape, amount, or color of the light output from the flash heads The barndoor direct your light beam from narrow to wide, gives you greater control over your spill light, can also be used for flaggin Barn door can be used for hard dramatic lighting. All metal construction that will last for year Controls your spill light, this is a must have accessory for creating professional image Gels and honeycomb attach to the barn door